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CVE-2021-4247

25
FAUCET Score

CVE-2021-4247 is a denial-of-service vulnerability affecting OWASP NodeGoat, specifically within the Query Parameter Handler component in the app/routes/research.js file. This vulnerability has a CVSS score of 7.5 (HIGH), indicating it can be exploited remotely with low attack complexity and no user interaction, leading to a complete loss of availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage. A patch (4a4d1db74c63fb4ff8d366551c3af006c25ead12) is available to remediate this issue.

Impacted Technologies

VendorProductVersion(s)CPE
< 2021-01-26CPE matchmatch criteria
cpe:2.3:a:owasp:nodegoat:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.01%
Probability of exploitation in next 30 days
EPSS Percentile
59.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0101 is in the 36th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / OWASP/NodeGoat/commit/4a4d1db74c63fb4ff8d366551c3af006c25ead12
PatchThird Party Advisory
github.com / OWASP/NodeGoat/issues/225
ExploitPatchThird Party Advisory
vuldb.com
Permissions RequiredThird Party Advisory